need to unmap the Addr in AddrFromSlice due to that there may be an IPv4-mapped IPv6 address

zhlsunshine · zhlsunshine · commit 6186106b99bd · 2022-10-25T15:10:28.000+08:00
diff --git a/src/net/netip/netip.go b/src/net/netip/netip.go
@@ -354,7 +354,9 @@ func AddrFromSlice(slice []byte) (ip Addr, ok bool) {
 	case 4:
 		return AddrFrom4(*(*[4]byte)(slice)), true
 	case 16:
-		return ipv6Slice(slice), true
+		ipAddr := ipv6Slice(slice)
+		unwrapAddr := ipAddr.Unmap()
+		return unwrapAddr, true
 	}
 	return Addr{}, false
 }

Original file line number	Diff line number	Diff line change
`@@ -354,7 +354,9 @@ func AddrFromSlice(slice []byte) (ip Addr, ok bool) {`
`354`	`354`	`case 4:`
`355`	`355`	`return AddrFrom4(([4]byte)(slice)), true`
`356`	`356`	`case 16:`
`357`		`- return ipv6Slice(slice), true`
	`357`	`+ ipAddr := ipv6Slice(slice)`
	`358`	`+ unwrapAddr := ipAddr.Unmap()`
	`359`	`+ return unwrapAddr, true`
`358`	`360`	`}`
`359`	`361`	`return Addr{}, false`
`360`	`362`	`}`